Claire Thompson
If you have small, painless bumps on your knees that look like goose bumps and feel like sandpaper, you may have a skin condition called keratosis pilaris, also known as chicken skin. Keratosis pilaris is caused by a buildup of keratin, a protein that protects the skin from infections, which clogs hair follicles and forms hard, dry bumps. While it usually appears on the upper arms, thighs, cheeks, and buttocks, it can appear anywhere on the body that has hair follicles, including the knees.
| Characteristics | Values |
|---|---|
| Common Name | Chicken Skin |
| Medical Name | Keratosis Pilaris |
| Description | Small, painless bumps on the skin that resemble goose bumps or the skin of a plucked chicken |
| Composition | Excess keratin, a protein that helps form hair, nails, and skin |
| Colour | Red, brown, white, or the same colour as skin |
| Skin Type | Dry |
| Common Areas | Upper arms, thighs, cheeks, buttocks, forearms, lower legs |
| Treatment | Moisturizers, exfoliating treatments, warm baths, hydrating lotions, vitamin A supplements |
| Contagious | No |
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What You'll Learn
Keratosis pilaris, a common skin condition
Keratosis pilaris, sometimes referred to as "chicken skin", is a common skin condition that affects around 50% to 80% of teenagers and 40% of adults. It is characterised by small, rough bumps on the skin that can be flesh-coloured, pink, red, white, brown, or black, depending on skin tone. These bumps are typically painless and non-itchy, and may resemble goose bumps or the skin of a plucked chicken. They occur around hair follicles, and are caused by a buildup of keratin, a hair protein, which clogs the pores and blocks the openings of the hair follicles.
Keratosis pilaris most commonly appears on the upper arms, thighs, cheeks, buttocks, and neck, although it can occur anywhere on the body that has hair follicles, including the face and legs. It tends to affect people with certain skin conditions, such as eczema or atopic dermatitis, and may be linked to a vitamin A deficiency. There may also be a genetic component, as it often runs in families.
While keratosis pilaris has no cure and is generally harmless, certain treatments can help manage the condition. These include using gentle, unscented moisturisers daily to improve the appearance of the bumps, and in cases of itchiness, a mild topical corticosteroid can be applied. Exfoliating treatments are also recommended, although harsh exfoliators should be avoided as they can cause irritation. In addition, taking vitamin A supplements or using moisturisers or creams containing small amounts of vitamin A may help treat the condition.
Keratosis pilaris typically clears up on its own over time, usually by the time an individual reaches their 30s. It may also temporarily worsen during winter when the skin tends to dry out, and during pregnancy due to hormonal changes.
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Chicken skin appearance and texture
Keratosis pilaris, sometimes called "chicken skin," is a common skin condition that causes patches of rough bumps to appear on the skin. These bumps are caused by a buildup of the protein keratin, which clogs the pores and blocks the openings of hair follicles. The bumps can be flesh-coloured, pink, red, white, brown, or black, depending on skin tone, and usually have the same colour as the surrounding skin. They are typically painless and non-itchy, but they may sometimes itch or feel like sandpaper.
Keratosis pilaris is often mistaken for pimples or small goose bumps, giving the skin a chicken-like appearance. It is typically found on the upper arms, thighs, cheeks, buttocks, and the fronts of the lower legs, but can appear anywhere on the body where hair follicles exist. The palms of the hands and soles of the feet, which lack hair follicles, are exempt.
The skin condition is usually harmless and tends to go away by itself over time, typically clearing up by the age of 30. It is more common in children and teenagers and may be linked to vitamin A deficiency, eczema, or genetic factors. While there is no cure, certain treatments can help manage the condition, such as using moisturisers, exfoliating treatments, warm baths, and hydrating lotions.
If you are concerned about the appearance of chicken skin on your knees or other body parts, it is advisable to consult a dermatologist or healthcare provider for a proper diagnosis and tailored treatment plan. They can typically diagnose keratosis pilaris through a simple physical examination of the affected area.
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Common causes and triggers
Keratosis pilaris is a common and harmless skin condition that can occur on various parts of the body, including the knees. It is characterized by the appearance of small, rough bumps or patches of bumpy skin that may feel like sandpaper. These bumps are often compared to the texture of chicken skin, which is why it is commonly referred to as "chicken skin." While the exact cause of keratosis pilaris is unknown, there are several factors that are believed to contribute to its development:
One of the most significant factors is genetics. Keratosis pilaris tends to run in families, and having a family history of the condition increases your risk. It is often inherited as an autosomal dominant trait, which means that if one parent has it, their children have a 50% chance of inheriting the gene and potentially developing the condition.
Another common trigger is dry skin. People with keratosis pilaris often have dry skin, and the two conditions can worsen each other. Dry skin can make the bumps more prominent and itchy, and scratching can further irritate the skin and make the condition more noticeable. This can create a cycle of dryness and irritation that exacerbates the appearance and symptoms of keratosis pilaris.
Hormonal changes can also play a role. That's why keratosis pilaris may develop or worsen during puberty, pregnancy, or other times of hormonal fluctuation. Androgens, a type of hormone that increases during these periods, can stimulate the production of keratin, a protein that forms the core of the plugs that block hair follicles in keratosis pilaris.
Additionally, certain skin-irritating habits or conditions can trigger or exacerbate keratosis pilaris. For example, frequent rubbing or pressure on the knees, such as from tight clothing or repetitive motions, can irritate the skin and make the condition more apparent. Cold, dry environments can also contribute to dry skin, which, as mentioned earlier, is a common factor in keratosis pilaris.
While less common, some people find that their diet may play a role in triggering or aggravating their keratosis pilaris. There have been limited studies suggesting a link between food sensitivities and the condition. Some individuals have reported improvements in their skin after eliminating certain foods, particularly dairy products, gluten, or specific allergens they are sensitive to. However, this is not universally effective, and it is always advisable to consult a healthcare professional before making significant dietary changes.
It is important to note that keratosis pilaris is typically a harmless condition and usually does not indicate any underlying health issues. However, if you are concerned or seeking treatment options, it is best to consult a dermatologist who can provide personalized advice and recommendations based on your specific case.
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Treatment and management
Keratosis pilaris, also known as "chicken skin", is a benign and harmless skin condition that causes small, painless bumps on the skin around hair follicles. These bumps may be skin-coloured, white, red, pink, brown, or black, depending on skin tone. While the exact cause of keratin buildup leading to chicken skin is unknown, it is often associated with skin conditions such as eczema and atopic dermatitis, as well as genetic factors. It is more common in women, children, and teenagers, and tends to clear up by the age of 30.
Chicken skin typically does not require treatment as it is a harmless condition. However, if the bumps bother you, there are several treatments and management strategies that can help improve the appearance of the skin and reduce symptoms:
- Moisturizers: Applying moisturizers several times a day, especially after showering while the skin is still damp, can help keep the skin hydrated and minimize the appearance of bumps. Look for moisturizers containing ceramides, mild acids, or urea, as these can help remove dead skin cells and exfoliate the skin.
- Exfoliation: Using exfoliating products can help to loosen and remove dead skin cells. However, avoid harsh physical exfoliators, as these can irritate the skin and make symptoms worse. Instead, opt for gentle chemical exfoliants, such as exfoliating gels, mild exfoliating soaps, or body washes containing mild acids.
- Warm baths: Taking warm baths can help improve the appearance of chicken skin. Avoid very hot water, as this can dry out the skin.
- Laser treatments: In more severe cases, laser treatments, such as IPL (intense pulsed light), can be effective in smoothing the skin and lightening dark spots caused by keratosis pilaris. These treatments are typically performed by dermatologists.
- Vitamin A: There may be a link between keratosis pilaris and vitamin A deficiency. Taking vitamin A supplements or using moisturizers or creams containing small amounts of vitamin A may help treat the condition.
- Corticosteroids: If the chicken skin is itchy, using a mild topical corticosteroid cream can help alleviate the itching. Be sure to follow the directions on the package and do not use more often than recommended.
- Avoid dry skin: Keeping the skin hydrated and avoiding dry skin can help improve the appearance of chicken skin. Take shorter showers (15 minutes or less), use lukewarm water, and consider using a humidifier to add moisture to the air.
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Diagnosis
Keratosis pilaris, sometimes called "chicken skin", is a common skin condition that causes patches of rough bumps to appear on the skin. These bumps are painless and are usually the same colour as your skin, but they may look red, white, brown, or black depending on skin tone. They can appear anywhere on the skin where hair follicles exist and are therefore commonly found on the upper arms, thighs, cheeks, buttocks, and neck.
If you think you have keratosis pilaris, a dermatologist can confirm the condition based on the appearance of the skin. There is no specific test for diagnosing this condition, and it is usually identified through a physical examination of the affected area. During the examination, factors such as the location and characteristics of the bumps, as well as your medical history, will be considered.
Keratosis pilaris is often mistaken for other skin conditions, so it is important to see a healthcare provider for an accurate diagnosis. Other conditions that can cause similar symptoms include eczema, psoriasis, allergies, fungal infections, and folliculitis. If you are experiencing symptoms such as itching or inflammation, it is recommended to consult a healthcare professional for proper diagnosis and treatment.
While keratosis pilaris typically clears up on its own over time, usually by the time you reach your 30s, there are treatments available to help manage the condition. These include using gentle, unscented moisturisers daily to improve the appearance of the bumps, as well as exfoliating treatments, warm baths, and hydrating lotions. In some cases, a mild topical corticosteroid may be recommended if the bumps are itchy. However, it is important to avoid harsh exfoliators and constant manipulation of the bumps, as these can cause further irritation.
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Frequently asked questions
You may have a common skin condition called keratosis pilaris, sometimes called "chicken skin". It causes patches of rough bumps to appear on the skin and can feel like sandpaper. It is usually not itchy or painful.
Keratosis pilaris is caused by a buildup of keratin, a protein that protects the skin from infections. The keratin clogs the pores, blocking the openings of hair follicles. The exact cause of keratin buildup is unknown, but it may be linked to vitamin A deficiency or skin conditions such as eczema or atopic dermatitis.
Keratosis pilaris typically appears as small, discoloured bumps on the skin that resemble goosebumps or the skin of a plucked chicken. It can appear anywhere on the skin where there are hair follicles, including the knees. A dermatologist can confirm the condition based on the appearance of the skin.
There is currently no cure for keratosis pilaris, but it tends to go away on its own by the time you reach 30 years old. It may also clear up in the summer when there is more moisture in the air. In the meantime, certain steps can help manage the condition, such as using daily moisturisers, exfoliating treatments, warm baths, and hydrating lotions.
While there is no known way to prevent keratosis pilaris, certain factors may increase the risk of developing the condition. These include having certain skin conditions such as eczema, a family history of keratosis pilaris, and dry skin.
